Potential Information Leak in avtimer when Processing IOCTL_GET_AVTIMER_TICK (CVE-2016-5346)

Release Date:

April 14, 2017

Affected Projects:

Android for MSMFirefox OS for MSMQRD Android

Advisory ID:

QCIR-2017-00019-1

CVE ID(s):

CVE-2016-5346

Summary:

The following security vulnerabilities have been identified: CVE-2016-5346 A local variable is uninitialized in avtimer, so if processing IOCTL_GET_AVTIMER_TICK, and an SSR event is triggered, the uninitialized value of avtimer_tick is copied to user space.

Access Vector: Local

Security Risk: Medium

Access Vector: Local

Affected Versions:

All Android releases from CAF using the Linux kernel.

Patch:

We advise customers to apply the following patches:

Individual Patches

CVE-2016-5346:

• https://source.codeaurora.org/quic/la//kernel/msm-3.18/commit/?id=6298a474322fb2182f795a622b2faa64abfd8474
• https://source.codeaurora.org/quic/la//kernel/msm-4.4/commit/?id=25a64e34bbec7b14887cbfe8266ccf6f27113bab

Acknowledgement:

Qualcomm Innovation Center, Inc. (QuIC) thanks Seven Shen (Trend Micro Mobile Threat Research Team) for bringing this issue to QuIC’s attention.

Revisions:

Initial revision

Contact: